Grinder



O. H. FEUCHT.

GRINDER. A APPLICATION man 001.27. 1921.

Patented June 6, 1922.

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OTTO I-I. IEE'U'CI-IT, OF S'l.` LOUIS, MISSOURI.

ear-surf ,ferrea-* GRINDER. ,y

To all whom it may concern.'

Be it known that4 OTTO H. FEUCHT, a citizen of the United States of' America, residing at 1312a Sullivan Avenue, in the=city `of St. Louis and State voflVIissouri, has invented certain new and useful Improvements in Grinders, of which thefollowing is a specification.A

The object of my inventionis to manufacture a cylinder4 grinder' which will be simple in' construction, capable of being easily and simply manufactured atV small cost and which can be adjusted-to'cylinders of varying' sizes. A1 further object is to devise a cylinder grinder in which the spindle will have a planetaryas well asia rotary motion andone in which they eccentricity of the spindle can be accurately but simply adjusted, l

Vith these and other objects in view` my invention has-,relation to certain novel feature of construction and arrangements of parts as will` be hereinafter morey fully described,',pointed out in the claims, and illustratedin the'dra'wings in'whichy l Fig. 1 isfa front elevation of myy device with the supporting members removedand in whichv- Fig. 2 is a plan in which Fig. 3 isl a longitudinal-sectional elevation' my device and in "which View of my deviceand Fig. '4is "a cross` section takenfalon'g the Fig.' 5 is an endelevation of my device with the spindle and its 'appurtenances removed; v i i Numeral designates a spindle having a shoulder 7' and a reduced portion 8 with threads 9 'neanits one' extremit'yfand a'further reducedportion' `10`lat the same'extrem'ity Numeral 1 1 indicates a` 0rinding clharacter stone of conventionall type and which is'secured'to the end ofthe spindle 6 by means' of the screw 12. Agwasher 13 is interposed between the head* of'. the screw 12 'and the stone 11. They inner face ofthe stone? 11 rests? partially lon the shoulderlt of the' spindle 6.' p

Mounted on and partially envelopin'gthe spindle'` 6' is the tube 15' made vin two parts whichA is--ofsuch length that when in Aposition' on the? reduc'sedportion 181 ofthe spindle 6`A that its one end?I rests Hush aga-'inst the Ytioned'on the rectangular casting specification of rettersratent; Patentedgune 6, 1922;l

Appiieation iiiealfoetober 27,' 1921.- seriai- No. 510,911.5.` f

shoulder 7- and lthat its otherl end envelope the threads 9; In order l to secure' the spindflein-the tube 15the lock washers 16 and `17-are :screwed Jon- ;to- 4the threads i9.

The tube' 15 hassecured thereto exteriorl'y a'recztangi'ilar` casting 18 which-holds the sidesare 'not paralleltojthe aXisof Ethe spindler but'which areflocatedat a-percepvtible Aangle ywith the axis off the spindle iv 6.

4The` rectangular casting,18f.forms shoulders with-v the spindle= 6V at' 21, 22,.,23 andy 24:- as lbest shown' in Fig. 3. Numeralf25nde/ si-gnates f a vs'fed'z'geofl a crosssection bestshownin Fig'. 4 and' of a longitudinal s'ection bestshow'n inFigS.' Numera1f26 designatesa similar .wedge likewise shown?.y best-fin, the- V same figures: `These wedges'25and"26=y areI posi-v i 18- Aon the spindle-'6 with thesmaller endo theiwedge atits center-to? the'wedge12'5 isthefragmenexternal fthreads?y 28./ Oppositely. disposed and similarly formed yisl the -fragmental annularV segmental section-29,havingthev eX.- tcrnal threads v30. Nume'rall" designates tal )segmental annular sectiony 27 -jhaving the f Numerals 33 land 34 designate segments.- of i vcylinders which are secured in the wheel 31 as best" shown in iFig; 4' to lthe rectangular casting'18 of? the/'spindle 6 'andpartially cover, the wedges 25 and 26 andl in sliding engagement with'thewedges: .Fh'e-detach-k d able securing means oflthese cylinder' kseg- `ments are projections-*on `the rectangular vcasting 18 and apertureson thein'nersur- 'faces ofthe cylinder segments. Numeral' e designates an annular sleeve? which'is positioned over the `spindle 6, `the lrectangular casting 18," the wedges25 andf26,\.andthe cylinder segments`33 and 34yandin direct ContactA with' the` latter. Numeral 36 designatesapulley'formed inthe peripheryjof I the sleeve? 35whichnpulley; projectsvbey-ond the cylinder segments -33 and 34, .the wedges and 26, and the r rectangular casting? l158.

lflunieral 37 designatesa-sleeve lsubstantia'lly similar to th-ef sleeve and?positoned.:over.-4

the same elements on the right in Fig. 3 as the sleeve 35 is positioned on the left in the same figure. The sleeve 35 at its left end in Fig. 3 is screwed to the cylinder segments 33 and 34 by the screws 38 as best shown and 40, the wheel 31 being sustained between them.' Theb'oxes 39 and 40 are screwed tothe frame 41. At the left end of the spindlev 6' is detachably secured the pulley 42. lt will be seen that by a rotation of the pulley 42 that the spindle 6 will be rotated and that by a rotation of the wheel 31 that the wedges'25 and 2G will be moved longitudinally in opposite directions and that therefore,`the spindle 6 will be moved eccentrically and that therefore, the stone 11 will be likewise vmoved eccentrically. Numeral 43 designates a bifurcated hook having its prongs bent fragmentally circumferentially as bestV shown in Fig. 4 and being joined by the U portion 44 in which is formed the hole 45. Numeral 46 designates a similar hook. In the prongs of the hooks are formed holes 47 through which screws 48 pass into,` holes formed in the cylinder segments 25 and l26;.both vof the hooks being similarly@ fastened on opposite sides. Numeral 49.v designates a worm which is in 1 mesh with the externall teeth of the wheel Numeral 52 i 31 and vwhich is mounted on the shaftv 50 which shaft passes through the holes 45 in the shaft 50. It will be seen that by turning `the head 51 that the shaftOv and hence the worm 49 and hence the wheel 31 will loel rotated and that by means of such rotation the -eccentricity of the spindle 6 may be altered. l i

designates a conventional lathe stand or taible on which the device thus 'far described is mounted with the spindle 6 in substantially a horizontal plane Numeral 53 designates the top of the stand 52.

Numeral 54 designates a movable block for holding the cylinder that is to be ground. llhisblo'ck is of conventional type, the cylinder being secured between the horizontal members 55 which are relatively adjustable by virtue of the screw 56. The block 54 is y"mounted'on a conventional track such as is used on lathes for moving the block horizontally on the stand 52. The cylinder is posiftioned in the block at such height that when the'block is moved toward the spindle 6, the @stone 11- will be moved to the interior of the cylinder; 'In order to move the block 54 Vhorizontally the yconventional wheels '57 and l58"are 'provided in the table 52.` Overl these wheels and screwed to the block 54 is passed the chain 59 which chain is in mesh with teeth on the wheels 57 and 58. By ra rotation therefore, of the wheel 57 the block 54 will be moved longitudinally. Numeral 60 indicates a handle on the wheel 57 to facilitate rotation of the wheel 57.

w The pulley 35, which offers means for applying the power for the rotation ofthe wheel 31 and the parts thereto attached, is so positioned relative a shaft and wheel attached to the table 52 that a belt may lo'e passed from the pulley 35 to such a wheel or pulley 61 which pulley is mounted on a shaft having a conventional clutch 62. I have not made a more specific disclosure of the clutch 62 and of the clutch 63 because they will be readily understood from the drawing and the remainder of this description. The clutch 63 is'used to engage and disengage the power from the pulley 42 and the clutch 62 to engage or disengage thepower v from the pulley 35. f

. It will be seen that the 'rotation of the pulley 35 produces the planetary motion and that the rotation of the pulley-42 produces the rotary motion. By means of the wheel 51 the eccentricity of the stone 11 may be delicately adjusted. The rotary motion is a great deal faster than the planetary mo- 95 tion, that is to say that if the rotary motion made 3,500 revolutions a minute that the planetary motion would make 60 revolutions a minute.

lln the operation of my device Vafter the cylinder is properly positioned it ispmoved longitudinally from left to right in Fig. 1 presenting the stone 11 to each point of the cylinder for the entire length of the cylinder. i l 105 l/Vhat l claim and mean to secure by Let? ters Patent is* 1..In combination with a spindle on one end of which is positioned a stone, a rectangular casting secured to said spindle, wedges insliding engagement with said rectangular casting and Vmeans of moving said wedges longitudinally relative said rectangular castmg. i

2. In combination with a spindle'at one 115 end of which is secured a stone, a rectangular casting secured to said spindle, wedgesin sliding engagement with said casting, cylinder segments 'in sliding engagement with said wedges, internally threaded segmental annular sections secured to said cylinder segments, an internally threaded wheel in threaded engagement with said segmental annular sections, a worm in threaded eninsges` i 3 ments in engagement with Said Wedges, said spindle, Wedges and cylinder segments in cylinder segments having secured thereto operative relat1onsh1p,and means of impartragmental segmental annular sections, an ing' rotary motion to one of said sleeves and l0l internally threaded Wheel, said Wheel in ndependentrotary motion to said spindle. threaded engagement with said segmental ann i In testimony'whereof I alliX my signature. nular sections, a Worm in threaded engagei ment with said Wheel, sleeves holding said i OTTO H. FEUCHT. 

